Mercury Mystique
GMC Sonoma
Toyota 4Runner
Grand Prix GTP

Why would the RPM go up and down in a 97 Mercury Mystique?


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Wiki User
2009-07-17 01:21:02
2009-07-17 01:21:02

This happened to me today on a major highway. The Ford garage told me it is a transmission problem. Check transmission problem solutions here in this blog. Solenoids, etc. It means your transmission is slipping, that happens in a lot of mercury mystiques. not all true there is a throttle position sensor or T.P.S. on your throttlebody try that its way cheaper than transmission


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what is wrong with my rpm it goes up and down

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Sounds like the brushes are worn down in the alternator.

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